Internal-combustion engine



H. V. J. JOUFFRET.

INTERNAL CO'MBUSTIUN ENGINE.v

APPLICATION FILED Aue.25, 1917.

1,349,459. Patented Aug. 10,1920.

2 SHEETS-SHEET l.

H. v. J. JouFFn-ET.

INTERNAL COMUSTION ENGINE.

APPLICATION FILED AUG.25, i917.

Patented Aug. 10, 1920.

.2 SHEETS-SHEET 2.

HENRI VICTOR JULES JF'JRET, 0F PARIS, liRANCE.`

INTERNAL-CGVZEUSLGN ENGNE.

Application filed August 25, 1917.

To all whom t may concern.'

Be it known that I, Henin Vieron JULES .lrourrnnn engineer, a citizen' of the French Republic, residing at Paris, France, have invented certain new and useful Improve ments in Internal-Combustion Engines, oi which the following is a specification.

This invention relates to internal combustion engines cooled by means oi a liquid circulation.

lt has for its principal object to enable engines of the class in question to be constructed in a more simple and economical manner than. has hitherto been the case.

'.lhe invention consists essentially in pro# viding engines ci the class in question with one or more cylinders, each formed from a tubo oil circular section, in providing a screw thread at one end of each tube, and a circular step or flange, the position orf which is preferably adjustable in the neighborhood oi" the other end oi the tube in providing a head piece or cover so constructed and proportioned that the threaded end ot each or" the cylinders can be screwed to the same and in providing a jacket so constructed and proportioned that it is adapted to be held in position with one olf its extremities resting against the lower edge or face of the head piece or cover and with the other cX- tremity coming against the circular step or iiange on each oi the cylinders.

The invention further includes certain constitu-.tional details which will be more fully described hereaitteras well. as various methods of carrying the invention into effect and as new industrial products engines of the class in question having the improvements adapted thereto, as ,well as special partsv suitable for the construction of such engines.V

ln order that the said invention may be clearly vunderstood it will now be described with referenceto the accompanying` drawings, which, however as will be clearly understood, are given merely by way of eX- ample.

Figure l of the said drawings shows a transverse section through the axis of one oi the cylinders of a four cylinder internal combustion engine constructed according to the invention, the details whichV are not of Specication of Letters Patent. Igwgnted Ano- 10 192@ Serial No. 188,203.

shown in. the drawing, the following or "some analogous construction is adopted.

t is a head or cover piece provided with the usual constrnctional details and comprising valve chambers al, admission passages c2 outlet passages a chambers c* I'or the circulation of water and combustion chambers c5.

The lower portion of each combustion chamber is bored in such a way that the said portion has an inner `diameter slightly greater than the inner diameter of the said chamber, and the wall of the said portion is provided, at the bottom with a. screw thread.

The lower face, surface or edge of the head piece or cover is provided with plane portions as.

The cylinders are made from tubes of circular section, and preferably `of steel., having, by preference, an inner diameter similar to that of the combustion chambers a5 and an outer diameter the same as the lower bored portions of the said" chambers. One of the extremities of each ot the said cylinders is provided with a screw threaded portion b1 for enabling it to be screwed into the screw thread at thelower part ol the chamber c5 of the head or cover.

The cylinders are provided. toward their other extremities with circular steps of flanges b2, coming on the outside. These steps or flanges may be integral with the said cylinders, or by preference they may be constructed, as shownl at Fig. G. In this case o2 is a ring adapted to screw upon a screw thread, provided upon a projecting portion b3 of the cylinder, formed for the purpose. The ring may be kept in place by means of a nut c and a lock nut c1. In this way the position of the said ring can be adjusted.

Z is a water jacket, preferably made of aluminium and having at the lower portion a sort of base plate all provided with circuV Y lar holes of a diameter about equal to the outer diameter of the cylinders Z2 and of such size that when the cylinders are passed through the saidu circular holes, sufficient space is left between the walls of the jacket and the cylinders for the circulation of the cooling liquid. The acket 4is slightly shorter than the distance between the screw threadedends of the cylinders and ltheir ycircular flanges andit has at its upper eX- tremi'ty a plane face Z2 adapted to come into contact with the plane surface a on lthehead piece or cover.

-With this construction in order to assemblethe engine it is suiinicient to engage the cylinders in the holes at the base of the water jacket, and to bring them into such a position that thest'eps or flanges come against the lower face of the said base,then.to screw the cylinders into the head piece in such a way Vthat the upper plane surface d2 ofthe.

waterjacket comes against the plane surface a of thev head piece. ,Y j j It will ofcourse be understood that in cases where the .step b2 is, removable, the

- lcylinders may be screwed in the first instance into positionin the head piece or cover, the water `jacket being afterward placed in position and then the rings t2 can be screwed j on to the cylinders.

In some cases it may be desirable, in addi-y tion to providing the construction just described, to provide chambers a, as shown in Vthe drawing, for` the water circulation, andV adapted to communicate with the Vspace beV Letters Patent `of the United States of America is A l. In an internal combustion'engine, the combination of a head piece comprising a combustion chamber and the usual associated parts, for each cylinder, a screw threaded portion at the lower part of the said head piece for each combustion chamber, a cylinder provided with a screw thread and adapted to be screwed to each such screw threaded portion, a projecting portion of the head piece extending` beyond each cylinder when in position, a jacket adapted to surround each cylinder with a certain amount of clearance,` and having a part at one end adapted to contact with the projecting portion of the head piece, a ring adapted to surround each cylinder and means for securing the said ring to the cylinder so that the lower end of the jacket is held in close' contact therewith when the cylinder is in position, all substantially as described.

' 2. In an internal combustion engine the combination of a head piece comprising a plurality of `combustion chambers and the usual associated parts, a screw threaded portion at the lower part of each combustion chamber, an appropriate number of cylinders each provided at one end with a screw thread adapted to screw to one of the combustion chambers, projecting portions of the head piece Iextending beyond the sides of the cylinders,ja jacket provided with a base plate having an appropriate number of holes and adapted to be passed over the cylinders, the said jacket being` furnished Y with walls adapted to surround the cylinders with a certain amount of clearance and to come at one end into close contact with the aforesaid projecting portion ofV the head piece and stepsconnected with each ofthe cylinders adapted to come into contact with and grip the other end of the jacket when the cylinders are in position all substantially as described; Y i Y In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. t f y f HENRI VICTOR JULES JOUFFRET. I/Vitnesses:

CHAs. P. PRiissLY, EUGNE QIULLIET. 

